Henry Catalogue 2010 - page 86

Industrial & Commercial Refrigeration Products
800.96.HENRY
Suitable for Ammonia
®
COMPONENTS
R37
Features:
Operation:
Eliminates expensive mechanical floats
Reduces number of connections required on
liquid level columns by mechanical floats
Provides automatic control of pumps, valves,
high and low alarms, and cutouts
Can be interfaced with a computer to track
and record refrigerant levels
To change level requirements, simply move the
liquid level switch assembly on the liquid level column
Maximum working pressure: 500 PSI (35 Kg/cm2)
Temperature rating: see table below
Solid State Switching for liquid sensing
No contact level sensing
Serviceable without loss of refrigerant
Works with oil, refrigerants, water, or any non-
hazardous, non-corrosive fluid
Only glass prism in contact with fluid medium
Meets UL standard #873 and #207 file numbers
E141577 and SA6720.
U.S. Patent 5,278,426
The E-9400 series liquid level switches use infrared light
reflecting from a conical glass prism molded in the sight glass
as a means of detecting the absence of a fluid at the level of
the glass cone. When no fluid covers the lower half of the cone,
infra-red light from the module reflects from the mirror-like
inner surface of the cone back to a light detector signaling the
electronic module to switch. When fluid covers the lower half of
the glass cone, the light from the module passes into the fluid.
This absence of light is detected by the module, which switches
into the opposite direction. The module provides a .06/.10
differential distance from the cone point down.
Catalog
Number
Voltage
Resistive
Rating
Contacts Liquid
Present
Wire Color Code
Replacement
Module No.
Min/Max Fluid
Temp.
E-9400
120V 50/60 Hz
.5 Amp
N.C.
Yellow & White
2-044-012
-40°F+210°F
E-9400A
120V 50/60 Hz
.5 Amp
N.O.
Yellow & White/Stripe
2-044-017
-40°F+210°F
E-9420
208/240V 50/60 Hz
.25 Amp
N.C.
Red & White
2-044-015
-40°F+200°F
E-9420A
208/240V 50/60 Hz
.25 Amp
N.O.
Red & White/Stripe
2-044-018
-40°F+200°F
E-9424
24V AC/DC
.5 Amp
N.C.
Orange & White
2-044-013
-40°F+210°F
E-9424A
24V AC/DC
.5 Amp
N.O.
Orange & White/Stripe
2-044-020
-40°F+210°F
LIQUID LEVEL SWITCHES
Liquid
level
sight
glass
Same dia. as 1/2” conduit for coupling to customer
supplied junction box.
Liquid level switch in Lucite body
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